When to plant in Dixon, CA
USDA Zone 9bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Dixon, California — all computed from Dixon's nearest NOAA weather station.
With about 294 frost-free days, Dixon supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. In zone 9b, frost is a minor factor for Dixon — most perennials thrive, and annual vegetables can go out early and stay late.
The average last spring frost in Dixon is now 8 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
DAVIS 2 WSW EXP FARM · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Dixon’s own odds, recorded at DAVIS 2 WSW EXP FARM.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 16 | Mar 22 | Feb 22 | Nov 1 | Nov 16 | Dec 1 |
| 32°F | Mar 11 | Feb 10 | Dec 31 | Nov 13 | Dec 1 | Dec 27 |
| 28°F | Feb 8 | Jan 6 | Dec 14 | Nov 29 | Dec 18 | Jan 18 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Dixon, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 14 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Dixon planting FAQ
When is the last spring frost in Dixon, CA?
On average, the last spring frost in Dixon is around February 10 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Dixon, CA?
Expect Dixon's first fall frost near December 1 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Dixon in?
Dixon is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Dixon?
Dixon has about 294 frost-free days — a long growing season — between the average last spring frost (February 10) and first fall frost (December 1).
When should I plant tomatoes in Dixon?
For Dixon, sow tomatoes indoors about December 16–December 30 and move the seedlings out around February 17, after the last spring frost.
Never miss a window in Dixon
An email when it’s time to start seeds, transplant, and sow — timed to Dixon’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Davis · 14 km
- Vacaville · 16 km
- Woodland · 26 km
- West Sacramento · 27 km
- Suisun City · 27 km
- Fairfield · 27 km
- Rio Vista · 32 km
- Lemon Hill · 33 km
Frost dates recorded at DAVIS 2 WSW EXP FARM, 11 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Dixon, CA — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00042294. Retrieved from https://blissgarden.com/california/dixon.